I've tried, but I can't figure it out. How to use conditional formatting to
alternatively color rows based on values in a column?

For example, in B13:B3000, I have values like this:

Col B Row color I'd lilke
Apples Green
Apples Green
Pears White
Pears White
Pears White
Pears White
Bananas Green
Monkeys White
Monkeys White
Giraffes Green etc...

Thanks for your help...